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Free construction calculators for contractors, builders, estimators, and homeowners. Every tool runs in your browser — no account, no subscription, your numbers never leave your device.

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Estimates are planning aids verify quantities against your local codes and supplier quotes.

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Bidding, Markup & Financials calculators

Turn job costs into bid prices: markup vs margin, overhead recovery, and break-even math. 6 free calculators below.

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  3. Bidding, Markup & Financials

6 calculators

Every tool below is free results update live as you type.

Pricing
Markup vs. Margin CalculatorMarkup vs margin calculator that converts between markup and margin, prices jobs from direct cost, and shows true net profit after overhead. Free, no sign-up.Calculates: Bid priceUse tool
Labor
True Burdened Labor RateLabor burden rate calculator that converts a base wage into the true employer cost per billable hour - taxes, comp, PTO, benefits included. Free, no sign-up.Calculates: True cost per billable hourUse tool
Labor
Subcontractor Piece-Work & Crew ProductionSubcontractor piece rate calculator that computes total payout, effective hourly yield per worker, and production pace for piece-rate crews. Free, no sign-up.Calculates: Total subcontract payoutUse tool
Overhead
Daily Overhead & Breakeven RateDaily overhead calculator that finds your minimum daily cost to keep the doors open and the minimum bid rate that actually leaves profit. Free, no sign-up.Calculates: Daily overhead costUse tool
Bidding
Break-Even CalculatorBreak-even calculator for contractors that shows the monthly revenue and number of jobs needed each month before the business turns a profit. Free, no sign-up.Calculates: Break-even revenueUse tool
Bidding
Change Order PricerChange order pricing calculator that prices extras and variations with margin protection built in, so change orders never get sold at cost. Free, no sign-up.Calculates: CO priceUse tool
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